Compilare: main.cpp: In function 'int main()': main.cpp:9:37: warning: unused variable 'dr' [-Wunused-variable] int N, sc = -1, smax = 1 << 31, dr = 1, st = 1, dr1, st1, cop; ^~ main.cpp:9:45: warning: unused variable 'st' [-Wunused-variable] int N, sc = -1, smax = 1 << 31, dr = 1, st = 1, dr1, st1, cop; ^~ main.cpp:31:35: warning: 'st1' may be used uninitialized in this function [-Wmaybe-uninitialized] cout << smax << " " << st1 << " " << dr1; ^~~ main.cpp:31:45: warning: 'dr1' may be used uninitialized in this function [-Wmaybe-uninitialized] cout << smax << " " << st1 << " " << dr1; ^